(19)
(11) EP 2 355 630 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.10.2012 Bulletin 2012/41

(43) Date of publication A2:
10.08.2011 Bulletin 2011/32

(21) Application number: 11152795.8

(22) Date of filing: 31.01.2011
(51) International Patent Classification (IPC): 
H05K 1/02(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 01.02.2010 TW 099102880

(71) Applicant: Avermedia Technologies, Inc.
Taipei (TW)

(72) Inventors:
  • Chang, Sheng-Cheng
    235, Taipei (TW)
  • Chiang, Chien-Chung
    235, Taipei (TW)
  • Hsu, Wei-Lun
    235, Taipei (TW)
  • Chen, Jin-Fu
    235, Taipei (TW)
  • Yeh, Chien-Ming
    235, Taipei (TW)

(74) Representative: Lang, Christian et al
LangRaible GbR Patent- und Rechtsanwälte Rosenheimerstrasse 139
81671 München
81671 München (DE)

   


(54) Circuit board with heat dissipating structure and manufacturing method thereof


(57) A circuit board (1) with a heat dissipating structure is provided. A first grounding conductor layer (210, 410) is formed on a first surface (21, 41) of a substrate (2, 4). A first insulting layer (211, 411) is formed on the first grounding conductor layer (210, 410) and defines a number of circuit element pin openings (212, 412) and a plurality of heat dissipating openings (213, 413) therein so that the first grounding conductor layer (210, 410) is exposed from the circuit element pin openings (212, 412) and the heat dissipating openings (213, 413). A number of solder balls (214, 414) are disposed in the circuit element pin openings (212, 412) and contacted with the first grounding conductor layer (210, 410). A number of heat dissipating structures (215, 415) are disposed in the heat dissipating openings (213, 413) and contacted with the first grounding conductor layer (210, 410). The heat dissipating structures (215, 415) and the solder balls (214, 414) have an identical material. The method for manufacturing the circuit board is also provided.







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